4JET debuts PearlCut precision cutting process at Glasstec

  Product news

The process uses ultrafast laser pulses and beam shaping for controlled crack propagation.

4Jetlaser
A smart phone cover glass including a notch can be cut in less than 5 seconds
German laser system integrator 4JET Technologies GmbH has developed a new process solution for precision cutting of glass. The process uses ultrafast laser pulses and a unique beam shaping solution for controlled crack propagation in brittle materials.
The first potential applications include free shape cutting of thin glass parts for mobile electronics and display substrates and cover glasses, yet the process is also suitable to separate thicker glasses for other applications. Processable glass types include soda lime and chemically strengthened glass with any ion-exchange depth. Additional brittle transparent materials such as sapphire can also be processed.
The new laser solution works non-ablative and kerf-free. As a result, no dust is created during the cutting process and the cut edges have a smoothness of radii greater than 2 micrometers. By minimizing edge defects, parts that were separated with the PearlCut process require very little to no edge finishing.
The standard process setup allows operators to cut strengthened glass up to 1 millimeter thickness in one pass with speeds in the range of 400 millimeters per second for straight lines and 100 millimeters per second for radii. A smart phone cover glass including a notch can be cut in less than 5 seconds.
PearlCut recombines several well known phenomena to induce micro modifications of laser radiation in glass by use of an ultrafast laser and a proprietary beam shaping solution. 4JET offers the new process in a very...
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